Planter support



FIG. 1 is a perspective view of my new design;

FIG. 2 is a side view of the design of FIG. 1;

FIG. 3 is a top view of the design of FIG. 1; and,

FIG. 4 is an exploded perspective view thereof.

The broken lines showing planters and another planter support are included for the purpose of showing features that form no part of the claimed design. 

CLAIM The ornamental design for a planter support, as shown and described. 